* [dpdk-dev] [PATCH] net/ice: remove unnecessary variable
@ 2020-02-25 13:14 Qi Zhang
2020-03-02 8:19 ` Ye Xiaolong
0 siblings, 1 reply; 3+ messages in thread
From: Qi Zhang @ 2020-02-25 13:14 UTC (permalink / raw)
To: beilei.xing, yahui.cao; +Cc: dev, Qi Zhang, stable
Remove unnecessary variable "meta" in ice_flow_create and
ice_flow_validate, it should be defined when really be needed:
its ice_parse_engine_create and ice_parse_engine_validate.
The patch also move the meta's memory free from each filter
engine->create to upper layer, the memory leakage when create
a fdir rule is also be fixed.
Fixes: f5cafa961fae ("net/ice: add flow director create and destroy")
Cc: stable@dpdk.org
Signed-off-by: Qi Zhang <qi.z.zhang@intel.com>
---
drivers/net/ice/ice_generic_flow.c | 28 ++++++++++++++--------------
drivers/net/ice/ice_hash.c | 2 --
drivers/net/ice/ice_switch_filter.c | 3 ---
3 files changed, 14 insertions(+), 19 deletions(-)
diff --git a/drivers/net/ice/ice_generic_flow.c b/drivers/net/ice/ice_generic_flow.c
index 38ac799d8..f22538758 100644
--- a/drivers/net/ice/ice_generic_flow.c
+++ b/drivers/net/ice/ice_generic_flow.c
@@ -1375,7 +1375,6 @@ typedef struct ice_flow_engine * (*parse_engine_t)(struct ice_adapter *ad,
struct ice_parser_list *parser_list,
const struct rte_flow_item pattern[],
const struct rte_flow_action actions[],
- void **meta,
struct rte_flow_error *error);
void
@@ -1713,11 +1712,11 @@ ice_parse_engine_create(struct ice_adapter *ad,
struct ice_parser_list *parser_list,
const struct rte_flow_item pattern[],
const struct rte_flow_action actions[],
- void **meta,
struct rte_flow_error *error)
{
struct ice_flow_engine *engine = NULL;
struct ice_flow_parser_node *parser_node;
+ void *meta = NULL;
void *temp;
TAILQ_FOREACH_SAFE(parser_node, parser_list, node, temp) {
@@ -1726,7 +1725,7 @@ ice_parse_engine_create(struct ice_adapter *ad,
if (parser_node->parser->parse_pattern_action(ad,
parser_node->parser->array,
parser_node->parser->array_len,
- pattern, actions, meta, error) < 0)
+ pattern, actions, &meta, error) < 0)
continue;
engine = parser_node->parser->engine;
@@ -1737,7 +1736,9 @@ ice_parse_engine_create(struct ice_adapter *ad,
continue;
}
- ret = engine->create(ad, flow, *meta, error);
+ ret = engine->create(ad, flow, meta, error);
+ if (meta)
+ rte_free(meta);
if (ret == 0)
return engine;
else if (ret == -EEXIST)
@@ -1752,23 +1753,25 @@ ice_parse_engine_validate(struct ice_adapter *ad,
struct ice_parser_list *parser_list,
const struct rte_flow_item pattern[],
const struct rte_flow_action actions[],
- void **meta,
struct rte_flow_error *error)
{
struct ice_flow_engine *engine = NULL;
struct ice_flow_parser_node *parser_node;
+ void *meta = NULL;
void *temp;
TAILQ_FOREACH_SAFE(parser_node, parser_list, node, temp) {
if (parser_node->parser->parse_pattern_action(ad,
parser_node->parser->array,
parser_node->parser->array_len,
- pattern, actions, meta, error) < 0)
+ pattern, actions, &meta, error) < 0)
continue;
engine = parser_node->parser->engine;
break;
}
+ if (meta)
+ rte_free(meta);
return engine;
}
@@ -1779,7 +1782,6 @@ ice_flow_process_filter(struct rte_eth_dev *dev,
const struct rte_flow_item pattern[],
const struct rte_flow_action actions[],
struct ice_flow_engine **engine,
- void **meta,
parse_engine_t ice_parse_engine,
struct rte_flow_error *error)
{
@@ -1814,7 +1816,7 @@ ice_flow_process_filter(struct rte_eth_dev *dev,
return ret;
*engine = ice_parse_engine(ad, flow, &pf->rss_parser_list,
- pattern, actions, meta, error);
+ pattern, actions, error);
if (*engine != NULL)
return 0;
@@ -1822,11 +1824,11 @@ ice_flow_process_filter(struct rte_eth_dev *dev,
case ICE_FLOW_CLASSIFY_STAGE_DISTRIBUTOR_ONLY:
case ICE_FLOW_CLASSIFY_STAGE_DISTRIBUTOR:
*engine = ice_parse_engine(ad, flow, &pf->dist_parser_list,
- pattern, actions, meta, error);
+ pattern, actions, error);
break;
case ICE_FLOW_CLASSIFY_STAGE_PERMISSION:
*engine = ice_parse_engine(ad, flow, &pf->perm_parser_list,
- pattern, actions, meta, error);
+ pattern, actions, error);
break;
default:
return -EINVAL;
@@ -1845,11 +1847,10 @@ ice_flow_validate(struct rte_eth_dev *dev,
const struct rte_flow_action actions[],
struct rte_flow_error *error)
{
- void *meta;
struct ice_flow_engine *engine;
return ice_flow_process_filter(dev, NULL, attr, pattern, actions,
- &engine, &meta, ice_parse_engine_validate, error);
+ &engine, ice_parse_engine_validate, error);
}
static struct rte_flow *
@@ -1863,7 +1864,6 @@ ice_flow_create(struct rte_eth_dev *dev,
struct rte_flow *flow = NULL;
int ret;
struct ice_flow_engine *engine = NULL;
- void *meta;
flow = rte_zmalloc("ice_flow", sizeof(struct rte_flow), 0);
if (!flow) {
@@ -1874,7 +1874,7 @@ ice_flow_create(struct rte_eth_dev *dev,
}
ret = ice_flow_process_filter(dev, flow, attr, pattern, actions,
- &engine, &meta, ice_parse_engine_create, error);
+ &engine, ice_parse_engine_create, error);
if (ret < 0)
goto free_flow;
flow->engine = engine;
diff --git a/drivers/net/ice/ice_hash.c b/drivers/net/ice/ice_hash.c
index d891538bd..fc3f33ee1 100644
--- a/drivers/net/ice/ice_hash.c
+++ b/drivers/net/ice/ice_hash.c
@@ -503,12 +503,10 @@ ice_hash_create(struct ice_adapter *ad,
out:
flow->rule = filter_ptr;
- rte_free(meta);
return 0;
error:
rte_free(filter_ptr);
- rte_free(meta);
return -rte_errno;
}
diff --git a/drivers/net/ice/ice_switch_filter.c b/drivers/net/ice/ice_switch_filter.c
index 4a9356b31..314a9a096 100644
--- a/drivers/net/ice/ice_switch_filter.c
+++ b/drivers/net/ice/ice_switch_filter.c
@@ -249,13 +249,10 @@ ice_switch_create(struct ice_adapter *ad,
}
rte_free(list);
- rte_free(meta);
return 0;
error:
rte_free(list);
- rte_free(meta);
-
return -rte_errno;
}
--
2.13.6
^ permalink raw reply [flat|nested] 3+ messages in thread* Re: [dpdk-dev] [PATCH] net/ice: remove unnecessary variable
2020-02-25 13:14 [dpdk-dev] [PATCH] net/ice: remove unnecessary variable Qi Zhang
@ 2020-03-02 8:19 ` Ye Xiaolong
2020-03-02 23:56 ` Zhang, Qi Z
0 siblings, 1 reply; 3+ messages in thread
From: Ye Xiaolong @ 2020-03-02 8:19 UTC (permalink / raw)
To: Qi Zhang; +Cc: beilei.xing, yahui.cao, dev, stable
Hi, Qi
On 02/25, Qi Zhang wrote:
>Remove unnecessary variable "meta" in ice_flow_create and
>ice_flow_validate, it should be defined when really be needed:
>its ice_parse_engine_create and ice_parse_engine_validate.
>
>The patch also move the meta's memory free from each filter
s/move/moves
>engine->create to upper layer, the memory leakage when create
>a fdir rule is also be fixed.
>
>Fixes: f5cafa961fae ("net/ice: add flow director create and destroy")
>Cc: stable@dpdk.org
>
>Signed-off-by: Qi Zhang <qi.z.zhang@intel.com>
>---
> drivers/net/ice/ice_generic_flow.c | 28 ++++++++++++++--------------
> drivers/net/ice/ice_hash.c | 2 --
> drivers/net/ice/ice_switch_filter.c | 3 ---
> 3 files changed, 14 insertions(+), 19 deletions(-)
>
>diff --git a/drivers/net/ice/ice_generic_flow.c b/drivers/net/ice/ice_generic_flow.c
>index 38ac799d8..f22538758 100644
>--- a/drivers/net/ice/ice_generic_flow.c
>+++ b/drivers/net/ice/ice_generic_flow.c
>@@ -1375,7 +1375,6 @@ typedef struct ice_flow_engine * (*parse_engine_t)(struct ice_adapter *ad,
> struct ice_parser_list *parser_list,
> const struct rte_flow_item pattern[],
> const struct rte_flow_action actions[],
>- void **meta,
> struct rte_flow_error *error);
>
> void
>@@ -1713,11 +1712,11 @@ ice_parse_engine_create(struct ice_adapter *ad,
> struct ice_parser_list *parser_list,
> const struct rte_flow_item pattern[],
> const struct rte_flow_action actions[],
>- void **meta,
> struct rte_flow_error *error)
> {
> struct ice_flow_engine *engine = NULL;
> struct ice_flow_parser_node *parser_node;
>+ void *meta = NULL;
> void *temp;
>
> TAILQ_FOREACH_SAFE(parser_node, parser_list, node, temp) {
>@@ -1726,7 +1725,7 @@ ice_parse_engine_create(struct ice_adapter *ad,
> if (parser_node->parser->parse_pattern_action(ad,
> parser_node->parser->array,
> parser_node->parser->array_len,
>- pattern, actions, meta, error) < 0)
>+ pattern, actions, &meta, error) < 0)
> continue;
>
> engine = parser_node->parser->engine;
>@@ -1737,7 +1736,9 @@ ice_parse_engine_create(struct ice_adapter *ad,
> continue;
> }
>
>- ret = engine->create(ad, flow, *meta, error);
>+ ret = engine->create(ad, flow, meta, error);
>+ if (meta)
>+ rte_free(meta);
Maybe I miss something, I see meta in fdir's parse_pattern_action is assigned as
&pf->fdir.conf which is not dynamically allocated like sw_meta_ptr in switch and
rss_meta_ptr in hash, is it valid to call rte_free(meta) for fdir?
And theoretically, if engine->create is NULL, is there a memory leak for meta?
Thanks,
Xiaolong
^ permalink raw reply [flat|nested] 3+ messages in thread* Re: [dpdk-dev] [PATCH] net/ice: remove unnecessary variable
2020-03-02 8:19 ` Ye Xiaolong
@ 2020-03-02 23:56 ` Zhang, Qi Z
0 siblings, 0 replies; 3+ messages in thread
From: Zhang, Qi Z @ 2020-03-02 23:56 UTC (permalink / raw)
To: Ye, Xiaolong; +Cc: Xing, Beilei, Cao, Yahui, dev, stable
> -----Original Message-----
> From: Ye, Xiaolong <xiaolong.ye@intel.com>
> Sent: Monday, March 2, 2020 4:20 PM
> To: Zhang, Qi Z <qi.z.zhang@intel.com>
> Cc: Xing, Beilei <beilei.xing@intel.com>; Cao, Yahui <yahui.cao@intel.com>;
> dev@dpdk.org; stable@dpdk.org
> Subject: Re: [dpdk-dev] [PATCH] net/ice: remove unnecessary variable
>
> Hi, Qi
>
> On 02/25, Qi Zhang wrote:
> >Remove unnecessary variable "meta" in ice_flow_create and
> >ice_flow_validate, it should be defined when really be needed:
> >its ice_parse_engine_create and ice_parse_engine_validate.
> >
> >The patch also move the meta's memory free from each filter
>
> s/move/moves
>
> >engine->create to upper layer, the memory leakage when create
> >a fdir rule is also be fixed.
> >
> >Fixes: f5cafa961fae ("net/ice: add flow director create and destroy")
> >Cc: stable@dpdk.org
> >
> >Signed-off-by: Qi Zhang <qi.z.zhang@intel.com>
> >---
> > drivers/net/ice/ice_generic_flow.c | 28 ++++++++++++++--------------
> > drivers/net/ice/ice_hash.c | 2 --
> > drivers/net/ice/ice_switch_filter.c | 3 ---
> > 3 files changed, 14 insertions(+), 19 deletions(-)
> >
> >diff --git a/drivers/net/ice/ice_generic_flow.c
> >b/drivers/net/ice/ice_generic_flow.c
> >index 38ac799d8..f22538758 100644
> >--- a/drivers/net/ice/ice_generic_flow.c
> >+++ b/drivers/net/ice/ice_generic_flow.c
> >@@ -1375,7 +1375,6 @@ typedef struct ice_flow_engine *
> (*parse_engine_t)(struct ice_adapter *ad,
> > struct ice_parser_list *parser_list,
> > const struct rte_flow_item pattern[],
> > const struct rte_flow_action actions[],
> >- void **meta,
> > struct rte_flow_error *error);
> >
> > void
> >@@ -1713,11 +1712,11 @@ ice_parse_engine_create(struct ice_adapter *ad,
> > struct ice_parser_list *parser_list,
> > const struct rte_flow_item pattern[],
> > const struct rte_flow_action actions[],
> >- void **meta,
> > struct rte_flow_error *error)
> > {
> > struct ice_flow_engine *engine = NULL;
> > struct ice_flow_parser_node *parser_node;
> >+ void *meta = NULL;
> > void *temp;
> >
> > TAILQ_FOREACH_SAFE(parser_node, parser_list, node, temp) { @@
> -1726,7
> >+1725,7 @@ ice_parse_engine_create(struct ice_adapter *ad,
> > if (parser_node->parser->parse_pattern_action(ad,
> > parser_node->parser->array,
> > parser_node->parser->array_len,
> >- pattern, actions, meta, error) < 0)
> >+ pattern, actions, &meta, error) < 0)
> > continue;
> >
> > engine = parser_node->parser->engine; @@ -1737,7 +1736,9 @@
> >ice_parse_engine_create(struct ice_adapter *ad,
> > continue;
> > }
> >
> >- ret = engine->create(ad, flow, *meta, error);
> >+ ret = engine->create(ad, flow, meta, error);
> >+ if (meta)
> >+ rte_free(meta);
>
> Maybe I miss something, I see meta in fdir's parse_pattern_action is assigned as
> &pf->fdir.conf which is not dynamically allocated like sw_meta_ptr in switch
> and rss_meta_ptr in hash, is it valid to call rte_free(meta) for fdir?
> And theoretically, if engine->create is NULL, is there a memory leak for meta?
Good point, meta release function could be implemented in low level engine and but should be directed by up layer, so I think the missing part is a new op like engine->meta_release.
Thanks
Qi
>
> Thanks,
> Xiaolong
^ permalink raw reply [flat|nested] 3+ messages in thread
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